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You searched for: subject:"Boundary Layers"
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[texts]On the separation of boundary layers - Sandborn, V. A
No Abstract Available
Keywords: BOUNDARY LAYERS
Downloads: 157
[texts]Similar boundary layer solutions for combined forced and free convection - Eichhorn, R.
No Abstract Available
Keywords: BOUNDARY LAYERS; FORCED CONVECTION; FREE CONVECTION
Downloads: 97
[texts]Free-Spinning-Tunnel Investigation of a 1/17 Scale Model of the Cessna T-37A Airplane - Bowman, James S., Jr.
Results of an investigation of a dynamic model in the Langley 20-foot free-spinning tunnel are presented. Erect spin and recovery characteristics were determined for a range of mass distributions and center-of-gravity positions. The effects of lateral displacement of the center of gravity, engine rotation, nose strakes, and increased rudder area were investigated.
Keywords: BOUNDARY LAYERS; STRUTS; VENTILATION; YAW; CAVITIES; REYNOLDS NUMBER
Downloads: 93
[texts]GENERALIZATION OF BOUNDARY-LAYER MOMENTUM-INTEGRAL EQUATIONS TO THREE-DIMENSIONAL FLOWS INCLUDING THOSE OF ROTATING SYSTEM - Mager, A
No Abstract Available
Keywords: BOUNDARY LAYERS; NAVIER-STOKES EQUATION; ROTATION; THREE DIMENSIONAL FLOW
Downloads: 317
[texts]THE INFLUENCE OF THE WIND ON THE ERROR AND PROBABILITY OF LOCALIZATION - NON
THE SYSTEMATIC ERROR IN LOCATING THE SOUNDING BALLOON CAUSED BY THE INFLUENCE OF THE WIND IS DISCUSSED IN TERMS OF THE DISPLACEMENT DURING THE INTERVALS BETWEEN INTERROGATIONS. THE ERRORS INTRODUCED BY WINDS PARALLEL TO THE TRACE, WINDS PERPENDICULAR TO THE TRACE, INDETERMINATE WINDS, AND WIND DIRECTION ARE ANALYZED. IT IS CONCLUDED THAT IF ONLY ERRORS OF DISTANCE ARE CONSIDERED, IT IS ADVANTAGEOUS TO INCREASE THE INTERVAL BETWEEN INTERROGATIONS...
Keywords: BARRIER LAYERS; SEMICONDUCTORS (MATERIALS); BOUNDARY LAYERS; ELECTRODES; POINT DEFECTS; RECTIFIERS
Downloads: 191
[texts]Compressible turbulent boundary layers with heat transfer and pressure gradient in flow direction (Volume 63B) - Walz, Alfred
Journal of Research of the National Bureau of Standards
Keywords: Boundary layers; empirical laws; heat transfer; pressure gradient
Downloads: 185
[texts]Center for Advanced Space Propulsion Second Annual Technical Symposium Proceedings - NON
The proceedings for the Center for Advanced Space Propulsion Second Annual Technical Symposium are divided as follows: Chemical Propulsion, CFD; Space Propulsion; Electric Propulsion; Artificial Intelligence; Low-G Fluid Management; and Rocket Engine Materials.
Keywords: FLOW DISTRIBUTION; IMAGING TECHNIQUES; RAYLEIGH SCATTERING; SUPERSONIC BOUNDARY LAYERS; THREE DIMENSIONAL FLOW; THREE DIMENSIONAL MODELS; BOUNDARY LAYERS; SHOCK WAVES; SUPERSONIC INLETS
Downloads: 274
[texts]Water Surface Currents, Short Gravity-Capillary Waves and Radar Backscatter - Atakturk, Serhad S.
Despite their importance for air-sea interaction and microwave remote sensing of the ocean surface, intrinsic properties of short gravity-capillary waves are not well established. This is largely due to water surface currents and their effects on the direct measurements of wave parameters conducted at a fixed point. Frequencies of small scale waves propagating on a surface which itself is in motion, are subject to Doppler shifts...
Keywords: SEMISPAN MODELS; AERODYNAMIC CONFIGURATIONS; TAKEOFF; WIND TUNNEL TESTS; LIFT; TRANSPORT AIRCRAFT; BOUNDARY LAYERS; AERODYNAMIC COEFFICIENTS
Downloads: 94
[texts]Disk mass densities in edge-on spiral galaxies - Rupen, Michael P
Very Large Array (VLA) observations of the neutral hydrogen (HI) gas in two nearby edge-on spirals (NGC 4565 and NGC 891) successfully resolve the thickness of the gas layers in both disks over a wide range in radii. The combination of B, C, and D array data produces a 4 arcsec (approx. 200 pc) beam and 21 km s(exp -1) velocity resolution, combined with sensitivity to structures as large as 18 arcmin (approx...
Keywords: DIFFUSION; TURBULENCE EFFECTS; DRAG REDUCTION; FRICTION REDUCTION; HYDRODYNAMICS; LIQUID FLOW; RIBLETS; SKIN FRICTION; BOUNDARY LAYERS; GROOVES
Downloads: 99
[texts]PHASE TRANSFORMATIONS DURING THERMAL TREATMENT OF ALLOY VT18 - KOROBOV, O. S.
THE VT18 ALLOY WAS INVESTIGATED DURING HEAT TREATMENT, AND IT WAS SHOWN THAT AT TEMPERATURES BELOW 930 DEG, THE ALPHA SUB 2-PHASE AND SOME OF THE BETA-PHASE ARE PRESENT, APART FROM THE ALPHA-MATRIX. DURING AGING, THE CHANGES ARE DETERMINED BY THE FORMATION OF THE ORDERED ALPHA SUB 2-PHASE. AFTER LONGER EXPOSURE, THE BETA-PHASE DECOMPOSES. THE INSTABILITY OF VT18, AT WORKING TEMPERATURES, IS DUE TO THE ORDERING OF THE ALPHA-SOLID SOLUTION AND DECOMPOSITION OF THE BETA-PHASE.
Keywords: DRAG; NONLINEAR EQUATIONS; PROBLEM SOLVING; TRANSONIC FLOW; BOUNDARY LAYERS; NUMERICAL ANALYSIS; SHOCK DISCONTINUITY
Downloads: 89
[texts]On the flow of a conducting fluid around a magnetized body - Kulikovskii, A. G
No Abstract Available
Keywords: REATTACHED FLOW; SUPERSONIC FLOW; TWO DIMENSIONAL FLOW; BACKWARD FACING STEPS; BOUNDARY LAYERS; SEPARATED FLOW
Downloads: 88
[texts]Investigation of radiation of a dense plasma obtained by the detonation of a fine wire in a vacuum - Ryazin, A. P., et al
Investigation of radiation of dense plasma obtained by detonation of fine wire in vacuum chamber
Keywords: AIR SAMPLING; HIGH TEMPERATURE; SPECTRUM ANALYSIS; ABSORPTION SPECTRA; BOUNDARY LAYERS; SHOCK WAVES
Downloads: 59
[texts]Preliminary analysis of performance of turbojet engines used as pumps for boundary-layer control - Conrad, E. W
No Abstract Available
Keywords: AERODYNAMIC DRAG; AIRFOILS; BOUNDARY LAYERS; FLIGHT TESTS; BOUNDARY LAYER TRANSITION; LAMINAR FLOW; REYNOLDS NUMBER
Downloads: 164
[texts]Summary of Available Data Relating to Reynolds Number Effects on the Maximum Lift Coefficients of Swept-Back Wings - Sweberg, Harold H.
The available foreign and American data relating to Reynolds number effects on the maximum lift coefficients of swept-back wings are summarized and discussed. The data show that at low Reynolds numbers (below about 2.0 x 10(exp 6)) higher maximum lift coefficients were measured in most cases for moderately swept-back wings than for unswept wings of similar plan form; at high Reynolds numbers, however, increasing sweepback resulted in decreasing maximum lift coefficients...
Keywords: PRESSURE GRADIENTS; BOUNDARY LAYERS; PERTURBATION; PRESSURE DISTRIBUTION; AIRFOILS; INCOMPRESSIBLE FLUIDS; LOW REYNOLDS NUMBER; AMPLIFICATION; TURBINES
Downloads: 100
[texts]Role of groundwater in formation of Martian channels - Howard, Alan D
A global 3-D model of groundwater flow has been used to study possible behavior of groundwater on Mars and its role in creating fluvial features. Conclusions drawn from an earlier 2-D groundwater model are supplemented and expanded. Topical headings are discussed as follows: timescales of groundwater flow; wet areas on Mars and location of outflow channels; implications for valley networks; the enigma of Hellas; absence of fluvial or periglacial features on Syrtis Major; development of chaotic t...
Keywords: CALIBRATING; CASCADE FLOW; FLOW MEASUREMENT; FLOW VELOCITY; LASER ANEMOMETERS; TURBOMACHINERY; VELOCITY MEASUREMENT; AIRCRAFT ENGINES; BOUNDARY LAYERS
Downloads: 84
[texts]Gimbaled, partially submerged rocket nozzle Patent - Brown, R. L
Gimbaled partially submerged nozzle for solid propellant rocket engines for providing directional control
Keywords: BOUNDARY LAYERS; ELECTRODES; MAGNETOHYDRODYNAMIC STABILITY; PLASMA TEMPERATURE; ELECTRIC CURRENT; ELECTRIC FIELDS; HALL EFFECT; MAGNETIC FIELDS
Downloads: 143
[texts]Solar cell performance, mathematical model Quarterly report, 1 Dec. 1969 - 28 Feb. 1970 - Barrett, M. J.
Mathematical model for performance prediction of silicon solar cell in space environment
Keywords: ABLATIVE MATERIALS; PYROLYSIS; THERMAL DEGRADATION; BOUNDARY LAYERS; CHEMICAL ANALYSIS; COMPOSITE MATERIALS; HEAT SHIELDING; POLYMERIZATION
Downloads: 172
[texts]Active microwave remote sensing of oceans, chapter 3 - NON
A rationale is developed for the use of active microwave sensing in future aerospace applications programs for the remote sensing of the world's oceans, lakes, and polar regions. Summaries pertaining to applications, local phenomena, and large-scale phenomena are given along with a discussion of orbital errors.
Keywords: AIR INTAKES; COWLINGS; ENGINE DESIGN; LEADING EDGES; BOUNDARY LAYERS; HYPERSONIC FLOW; INTAKE SYSTEMS
Downloads: 126
[texts]Boundary-layer-transition measurements in full-scale flight - Banner, R. D.
No Abstract Available
Keywords: BOUNDARY LAYERS; LAMINAR FLOW; SUCTION; TURBULENCE EFFECTS; BOUNDARY LAYER TRANSITION; JOUKOWSKI TRANSFORMATION; PRESSURE DISTRIBUTION
Downloads: 88
[texts]Aerodynamic analysis of the solid propellant booster deceleration subsystem drop tests - NON
No Abstract Available
Keywords: FLASHBACK; LIQUID FUELS; SPRAY CHARACTERISTICS; BOUNDARY LAYERS; FLAMES; JET ENGINE FUELS
Downloads: 68
[texts]Equal-Curvature X-Ray Telescopes - Saha, Timo T.
We introduce a new type of x-ray telescope design; an Equal-Curvature telescope. We simply add a second order axial sag to the base grazing incidence cone-cone telescope. The radius of curvature of the sag terms is the same on the primary surface and on the secondary surface. The design is optimized so that the on-axis image spot at the focal plane is minimized. The on-axis RMS (root mean square) spot diameter of two studied telescopes is less than 0.2 arc-seconds...
Keywords: ATMOSPHERIC GENERAL CIRCULATION MODELS; OPTICAL PROPERTIES; DUST STORMS; AEROSOLS; ATMOSPHERIC CIRCULATION; BOUNDARY LAYERS; DIFFUSIVITY; FEEDBACK
Downloads: 70
[texts]INVESTIGATION OF STATIC PRESSURES AND BOUNDARY-LAYER CHARACTERISTICS ON THE FORWARD PARTS OF NINE FUSELAGES OF VARIOUS CROSS-SECTIONAL SHAPES AT M INFINITY EQUAL 2.01 - Hasel, L. E.
Boundary layer characteristics of fuselages of various cross sectional shapes at static pressure
Keywords: ANGLE OF ATTACK; BOUNDARY LAYERS; FUSELAGES; SHAPES; STATIC PRESSURE; BOUNDARY LAYER; FUSELAGE; STATIC PRESSURE
Downloads: 164
[texts]Building a Multi-Discipline Digital Library Through Extending the Dienst Protocol - Nelson, Michael L.
The purpose of this project is to establish multi-discipline capability for a unified, canonical digital library service for scientific and technical information (STI). This is accomplished by extending the Dienst Protocol to be aware of subject classification of a servers holdings. We propose a hierarchical, general, and extendible subject classification that can encapsulate existing classification systems.
Keywords: BASE FLOW; COMPUTERIZED SIMULATION; PRESSURE MEASUREMENT; SHOCK TUNNELS; BOUNDARY LAYERS; PRESSURE SENSORS; TEST CHAMBERS
Downloads: 84
[texts]Upper-Stage Flight Experiment - Anderson, W. E.
For propulsion applications that require that the propellants are storable for long periods, have a high density impulse, and are environmentally clean and non-toxic, the best choice is a combination of high-concentration hydrogen peroxide (High Test Peroxide, or HTP) and a liquid hydrocarbon (LHC) fuel. The HTP/LHC combination is suitable for low-cost launch vehicles, space taxi and space maneuvering vehicles, and kick stages...
Keywords: NOZZLE DESIGN; WIND TUNNEL NOZZLES; FLOW DISTRIBUTION; INVISCID FLOW; REAL GASES; OPTIMIZATION; SIMPLIFICATION; BOUNDARY LAYERS
Downloads: 82
[texts]Differential equations of the equilibrium states of thin elastic shells in the postcritical stage - Alumyae, N. A
No Abstract Available
Keywords: FLAT PLATES; RAREFIED GASES; VISCOUS FLOW; AERODYNAMICS; BOUNDARY LAYERS; FLUID MECHANICS; GAS DYNAMICS
Downloads: 93
[texts]Hypersonic nonviscous radiant gas flow past a cone (obtekaniye konusa giperzvukovym potokom nevyazkogo isluchayushchego gaza) - Kolton, G. A
Determining effect of radiant gas on hypersonic flow around cone using boundary layer method
Keywords: BOUNDARY LAYERS; GAS FLOW; HYPERSONIC FLOW; BOUNDARY LAYER; GAS FLOW; HYPERSONIC FLOW
Downloads: 90
[texts]Protection of naval engineer personnel against heat - Bernardini, A.
Protective clothing for naval engineer personnel against heat
Keywords: FLOW DISTRIBUTION; HEAT TRANSFER; LEADING EDGES; BOUNDARY LAYERS; FLAT PLATES; GROOVES; HYPERSONIC FLOW; IMPINGEMENT; SWEEPBACK
Downloads: 99
[texts]On the Theory of Thin Shallow Shells - Nazarov, A. A
This report is concerned with the theory of thin shallow shells. It does not employ the lines of curvature as the coordinate system, but employs ''almost cartesian coordinates'' or the coordinates obtained by cutting the surface into two mutually orthogonal systems of parallel planes.
Keywords: SUPERSONIC BOUNDARY LAYERS; NAVIER-STOKES EQUATION; ROUGHNESS; REYNOLDS NUMBER; SOUND WAVES; FREQUENCY STABILITY; EIGENVECTORS
Downloads: 127
[texts]Comparison of Rolling Moment Characteristics During Roll Oscillations for a Low and a High Aspect Ratio Configuration - Brandon, Jay M.
Improvements in testing and modeling of nonlinear and unsteady aerodynamic effects for flight dynamics predictions of vehicle performance is critical to enable the design and implementation of new, innovative vehicle concepts. Any configuration which exhibits significant flow separation, nonlinear aerodynamics, control interactions or attempts maneuvering through one or more conditions such as these is, at present, a challenge to test, model or predict flight dynamic responses prior to flight...
Keywords: AIRFOILS; EDDY VISCOSITY; STRESS ANALYSIS; TURBULENCE MODELS; FLOW DISTRIBUTION; NONLINEARITY; TURBULENT FLOW; BOUNDARY LAYERS
Downloads: 103
[texts]EVALUATION OF TAKEOFF AND LANDING PERFORMANCE OF COMMERCIAL STOL AIRPLANES - CALCARA, M
THE BASIC REQUIREMENTS FOR COMMERCIAL STOL AIRPLANES LEADING TO THE USE OF HIGH BY-PASS RATIO TURBOFANS AND VERY ADVANCED HIGH-LIFT SYSTEMS ARE BRIEFLY REVIEWED. WITH THE METHOD DEVELOPED, A RAPID EVALUATION OF TAKEOFF AND LANDING PERFORMANCE MAY BE MADE WHICH PERMITS AN EASY COMPARISON OF DIFFERENT CONFIGURATIONS. THE METHOD TAKES INTO ACCOUNT: SAFETY REQUIREMENTS (SPEED MANEUVERING MARGIN, CRITICAL ENGINE FAILURE AT TAKEOFF, LANDING FIELD LENGTH FACTOR), PASSENGER COMFORT AND PILOT LIMITATIONS...
Keywords: BOUNDARY LAYERS; FLIGHT VEHICLES; MEASURING INSTRUMENTS; WAKES; CATALOGS (PUBLICATIONS); PRESSURE MEASUREMENT; SHEAR STRESS; VELOCITY MEASUREMENT
Downloads: 122
[texts]UTILIZATION OF SOLAR ENERGY - OSHIDA, I
COMMENTS ARE PRESENTED ON AN INTERNATIONAL CONFERENCE CONCERNED WITH SOLAR ENERGY UTILIZATION. THE DIFFICULTIES OF HARNESSING SOLAR ENERGY ARE OUTLINED IN TERMS OF THREE BASIC PROPERTIES: (1) HIGH DILUTION, (2) INTERMITTENT NATURE, AND (3) HIGH ENTROPY. THE CURRENT STATE AND FUTURE PROSPECTS OF UTILIZATION OF SOLAR ENERGY IN VARIOUS FORMS ARE DISCUSSED.
Keywords: HEAT TRANSFER; TURBINE BLADES; WIND TUNNEL NOZZLES; BOUNDARY LAYERS; GAS TURBINES; TURBULENT FLOW
Downloads: 165
[texts]Engine/airframe compatibility studies for supersonic cruise aircraft - NON
Technology assessment studies were conducted to provide an updated technology base from which an advanced supersonic cruise aircraft can be produced with a high probability of success. An assessment of the gains available through the application of advanced technologies in aerodynamics, propulsion, acoustics, structures, materials, and active controls is developed. The potential market and range requirements as well as economic factors including payload, speed, airline operating costs, and airli...
Keywords: BOUNDARY LAYERS; MULTISPECTRAL BAND SCANNERS; OCEAN CURRENTS; EREP; INFRARED RADIATION; SKYLAB PROGRAM; UPWELLING WATER
Downloads: 246
[texts]THE SPECTRAL DISTRIBUTION OF THE LUMINANCE COEFFICIENT OF THE SEA IN WATERS WITH DIVERSE OPTICAL PROPERTIES - KHALEMSKIY, E. N
THE HYDROOPTICAL CHARACTERISTICS WHICH EXERT AN INFLUENCE ON THE COEFFICIENT OF SEA LUMINANCE ARE CONSIDERED. THESE INCLUDE THE ABSORPTION INDEX, THE INDEX OF BACKWARD REFRACTION, AS WELL AS THE CONCENTRATION OF SUSPENDED PARTICLES IN THE SEA WATER, THUS THE TRANSPARENCY OF THE WATER. THE EMPIRICAL RESULTS OF SPECTRAL DISTRIBUTION AND THE DEPENDENCE OF THE LUMINANCE COEFFICIENT ON TRANSPARENCY ARE PRESENTED.
Keywords: AIR WATER INTERACTIONS; DIFFUSE RADIATION; BOUNDARY LAYERS; ISOTROPY; LIGHT SCATTERING; OCEANS; RADIANT FLUX DENSITY; RADIATION DISTRIBUTION
Downloads: 108
[texts]A communication link between the GIM data base and a general application program - Argo, W. V
Utilizing the extract verb of GIM causes the requested information to be extracted from the GIM base and written on to tape. When the GIM extract has completed, a FORTRAN program is then compiled and executed. This program reads the tape generated by GIM, formats and prints the extracted data on the line printer. When an end of file on the extracted tape is encountered the job is terminated.
Keywords: BOUNDARY LAYERS; COMPUTER TECHNIQUES; FLORIDA; OCEAN CURRENTS; ATMOSPHERIC SCATTERING; EREP; MICROORGANISMS; MULTISPECTRAL PHOTOGRAPHY; SKYLAB PROGRAM
Downloads: 98
[texts]Saturn, 1959 - NON
In October 1958, the National Aeronautics and Space Agency (NASA) was asked to absorb the Army Ballistic Missile Agency (ABMA) space group, but an agreement was reached two months later for the group to remain with the Army while being responsive to NASA. This decision was to be reconsidered and reversed within a year. The competition in large launch vehicles between NASA, ARPA (Advanced Research Projects Agency), Air Force, and Army begun in 1958, continued into 1959...
Keywords: AERODYNAMICS; BOUNDARY LAYERS; SEPARATED FLOW; AXISYMMETRIC FLOW; BOUNDARY CONDITIONS; COMPUTATION; INVISCID FLOW; NUMERICAL ANALYSIS; VISCOUS FLOW
Downloads: 126
[texts]The NASA/Army Autonomous Rotorcraft Project - Whalley, M.
An overview of the NASA Ames Research Center Autonomous Rotorcraft Project (ARP) is presented. The project brings together several technologies to address NASA and US Army autonomous vehicle needs, including a reactive planner for mission planning and execution, control system design incorporating a detailed understanding of the platform dynamics, and health monitoring and diagnostics. A candidate reconnaissance and surveillance mission is described...
Keywords: AERODYNAMIC DRAG; DRAG REDUCTION; SUCTION; SHOCK WAVES; BOUNDARY LAYER SEPARATION; TRANSONIC SPEED; BOUNDARY LAYERS
Downloads: 200
[texts]Boundary layer relationships resulting from an approximation of the viscosity of equilibrium dissociating air - Demyanov, Yu. A.
Boundary layer relationships resulting from approximation of viscosity of equilibrium dissociating air
Keywords: BOUNDARY LAYERS; ENTHALPY; EQUILIBRIUM FLOW; GAS DISSOCIATION; GAS VISCOSITY; BOUNDARY LAYER; EQUILIBRIUM FLOW; GAS DISSOCIATION; VISCOSITY
Downloads: 96
[texts]Solutions Network Formulation Report. Landsat Data Continuity Mission Simulated Data Products for Bureau of Land Management and Environmental Protection Agency Abandoned Mine Lands Decision Support - Estep, Lelan
Presently, the BLM (Bureau of Land Management) has identified a multitude of abandoned mine sites in primarily Western states for cleanup. These sites are prioritized and appropriate cleanup has been called in to reclaim the sites. The task is great in needing considerable amounts of agency resources. For instance, in Colorado alone there exists an estimated 23,000 abandoned mines. The problem is not limited to Colorado or to the United States...
Keywords: BOUNDARY LAYER TRANSITION; CORRELATION; THERMAL STRESSES; AEROTHERMODYNAMICS; CALIBRATING; LEADING EDGES; TURBULENCE; BOUNDARY LAYERS; THERMAL PROTECTION; PROTUBERANCES
Downloads: 65
[texts]Data for NASA's AVE 6 experiment: 25-mb sounding data and synoptic charts - Dupuis, L. R.
The Atmospheric Variability Experiments 6 experiment is described, and tabulated rawinsonde data at 25-mb intervals from the surface to 25 mb for the 22 stations participating in the experiment is presented. Soundings were taken between 0000 GMT 27 May and 1200 GMT 28 May 1977. The methods of data processing and their accuracy are briefly discussed. Synoptic charts prepared from the data are presented together with an example of contact data.
Keywords: AIRCRAFT HAZARDS; DYNAMIC MODELS; WIND SHEAR; BOUNDARY LAYERS; THUNDERSTORMS; WIND VELOCITY
Downloads: 233
[texts]Processing eutectics in space - Douglas, F. C.
Studies which have been done in an earth-based laboratory environment have generally not yielded specimens with the degree of perfection required of the eutectic microstructure to provide test data to evaluate their nonstructural applications. It has been recognized that the low-g environment of an orbiting space laboratory provides a unique environment to re-examine the process of solidification with the goal of producing better microstructures...
Keywords: HEAT TRANSFER; TROPOSPHERE; BOUNDARY LAYERS; CLOUD COVER; HEAT FLUX; WEATHER FORECASTING
Downloads: 62
[texts]NASA Earth Resources Technology Satellite - Data user's handbook - NON
No Abstract Available
Keywords: AERODYNAMIC CHARACTERISTICS; HIGH SPEED; AERODYNAMIC HEATING; AIRCRAFT CONFIGURATIONS; ARTIFICIAL SATELLITES; BOUNDARY LAYERS; MANNED SPACECRAFT; MISSILES; REENTRY
Downloads: 386
[texts]Preliminary results of observations of the ionospheric effect during the solar eclipse of 15 February 1961 - Shashunkina, V. M., et al
No Abstract Available
Keywords: E REGION; GEOMAGNETISM; BOUNDARY LAYERS; EARTH (PLANET); MAXWELL EQUATION; PLANETARY MAGNETIC FIELDS
Downloads: 86
[texts]Fluid Mechanics - L.D. Landau & E.M. Lifshitz
L.D. Landau & E.M. Lifshitz Fluid Mechanics ( Volume 6 of A Course of Theoretical Physics ) Pergamon Press 1959 Acrobat 7 Pdf 24.8 Mb. Scanned by artmisa using Canon DR2580C + flatbed option
Keywords: Physics; Ideal Fluids; Viscous; Turbulence; Boundary Layers; Diffusion; Shock Waves; Superfluids
Downloads: 17,050 (1 review)
[texts]GCM Studies on the Interactions Between Photosynthesis and Climate at Diurnal to Decadal Time Scales - Collatz, G. James
Transpiration, a major component of total evaporation from vegetated surfaces, is an unavoidable consequence of photosynthetic carbon fixation. Because of limiting soil moisture and competition for solar radiation plants invest most of their fixed carbon into structural and hydraulic functions (roots and stems) and solar radiation absorption (leaves). These investments permit individuals to overshadow competitors and provide for transport of water from the soil to the leaves where photosynthesis...
Keywords: PLASMAS (PHYSICS); BOUNDARY LAYERS; CONVECTION; DENSITY DISTRIBUTION; PLASMA DENSITY; DYNAMIC MODELS; ELECTRIC FIELDS; TRAPPED MAGNETIC FIELDS; TROPICAL REGIONS; PLASMASPHERE
Downloads: 75
[texts]The atom model of the photron theory - Nowak, K
No Abstract Available
Keywords: COEFFICIENTS; REYNOLDS EQUATION; GAS-SOLID INTERACTIONS; HEAT TRANSFER COEFFICIENTS; PARTICLES; SPHERES; SUSPENDING (MIXING); BOUNDARY LAYERS; BOUSSINESQ APPROXIMATION; NUSSELT NUMBER
Downloads: 108
[texts]Convoluting device for forming convolutions and the like Patent - Michel, R. E.
Punch and die device for forming convolution series in thin gage metal hemispheres
Keywords: BOUNDARY LAYERS; FLOW DISTORTION; HYPERSONIC FLOW; TURBULENT DIFFUSION; INTERACTIONS; NAVIER-STOKES EQUATION; PRESSURE GRADIENTS; PROBLEM SOLVING; REYNOLDS NUMBER
Downloads: 72
[texts]PIECEMEAL SOLUTIONS IN THE PROGRAMMING OF OPTIMAL FLIGHT TRAJECTORIES - CICALA, PLACID
THE GENERAL EQUATIONS THAT GOVERN THE SHAPE OF THE OPTIMAL FLIGHT PATHS THAT MAY BE EXECUTED IN A VERTICAL PLANE ARE WRITTEN OUT IN A FORM WHICH IS ESPECIALLY SUITED TO STUDY OF THE PRACTICAL SITUATION WHEREIN THE COMPLETE TRAJECTORY IS MADE UP OUT OF PIECEMEAL SECTIONS OF DIVERSE CHARACTER. AS A RULE, REAL FLIGHT PATHS WILL BE FOUND TO CONSIST OF SUCH SPLICED TOGETHER PORTIONS OF TRAJECTORY-SEGMENTS, ALONG WHICH SPECIAL LOCAL RULES OF FLIGHT WILL BE IN FORCE IN ORDER TO MEET A SERIES OF VARIANT...
Keywords: LEADING EDGES; BOUNDARY LAYERS; NUMERICAL ANALYSIS; DATA ACQUISITION; EXPERIMENTATION; VORTICES; LIFT; WINGS; TRAILING EDGES; ANGLE OF ATTACK
Downloads: 115
[texts]Technical writing in America: A historical perspective - Connaughton, M. E
The practice of technical writing is described in the earliest phase, from the beginning in the seventeenth century until approximately 1815, when specializations begin to coalesce around professional organizations and specialized journals. Emphasis is placed on those traits that technical writing has in common with all species of composition.
Keywords: BOUNDARY LAYER EQUATIONS; EQUATIONS; FLOW; LAMINAR FLOW; TURBULENCE MODELS; TURBULENT BOUNDARY LAYER; UNSTEADY FLOW; BOUNDARY LAYERS; FLOW STABILITY
Downloads: 86
[texts]Pollution emissions from single swirl-can combustor modules at parametric test conditions - Mularz, E. J.
Exhaust pollutant emissions were measured from single swirl-can combustor modules operating over a pressure range of 69 to 276 N/sq cm (100 to 400 psia), over a fuel-air ratio range of 0.01 to 0.04, at an inlet air temperature of 733 K (860 F), and at a constant reference velocity of 23.2 m/sec). Many swirl-can module designs were evaluated; the 11 most promising designs exhibited oxides of nitrogen emission levels lower than that from conventional gas-turbine combustors...
Keywords: BOUNDARY LAYER TRANSITION; REYNOLDS NUMBER; SUPERSONIC BOUNDARY LAYERS; FREE FLOW; LEADING EDGES; MACH NUMBER; WIND TUNNEL MODELS; WIND TUNNEL TESTS
Downloads: 130
[texts]Stressed-Oxidation Lifetime of Different SiC Fiber, CVI Matrix SiC Minicomposites in Air - Morscher, Gregory N.
The stressed-oxidation lifetime properties of several minicomposites composed of single fiber tows with a CVI SiC matrix were compared. The minicomposites were made up of Nicalon(Tm) and Hi-Nicalon(Tm) SiC fibers with carbon or BN interphases. Constant load stress-rupture tests were performed between 600 and 13000 C in air for all of the minicomposite systems. Cyclic load testing was performed on the Hi-Nicalon minicomposite systems...
Keywords: CHEMICAL ANALYSIS; VAPORIZING; RECESSION; BOUNDARY LAYERS; CHEMICAL REACTIONS; VOLATILITY; THERMOCHEMISTRY; SILICON DIOXIDE; FUEL COMBUSTION; CHEMICAL PROPERTIES; CHEMICAL TESTS; WATER VAPOR
Downloads: 87
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